Blower.



PATENTED MAR. 28, 1905. H. E. PARSON.

BLOWER.

APPLIGATION FILED H0128, 190s. RENBWED MAR. e, 1905.

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A/4///////////// www AN PATENTED MALzg, 11005:.

H. E. PARSON.

BLOWER. APPLICATION FILED NOV. 28, 1903. RENBWED MAR. 6, 1905'.

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l wen to@ fzf. Pansa/c UNITED STATES Patented March 28, 1905.

PATENT OEEICE.

BLOWER.

SPECIFICATION forming part of Letters Patent N o. 786,234, dated March28, 1905. Application led November 2S, 1903. Renewed March 6, 1905.Serial No. 248,656.

To @ZZ whom t may concern:

Beit known that I, HENRY EDWIN PARsoN, a citizen of the United States ofAmerica, and a resident of 320 Broadway, New York, State of New York,(whose post-oflice address is 320 Broadway, New York, N. Y. haveinvented certain new and useful Improvements in Blowers, of which thefollowing is a specification.

My invention relates to a new and improved form of air-injectingmechanism, commonly called a blower, which is used for the purpose ofproducing a forced draft under furnaces. In a device of this sort itisimportant that the angles in the pipes through which the air is to passshould, as far as possible, be reduced in number and that the path oftheair should be as straight as the requirements of the structure willpermit. It is also important that the steam-jets, by means of which aninduced draft is created, should be so located as to permit a maximum ofair-inlet and interfere as little as possible with the stream ofinflowing air. It is also important that the injectors should be soconstructed that they may be set at any desired aperture and when so setshould remain constantly at the set aperture without variation orchange.

Referring to the drawings, Figure 1 is a vertical section of theblower-casing and of two of the steam-nozzles, showing three others infull elevation. Fig. 2 is a front elevation of the blower with thefunnel removed. Fig. 3 is a vertical section of the 'funnel detached.Fig. 4 is a vertical section of the face-plate detached. Fig. 5 is airont view of a fragment of the face-plate. Fig. 6 is a longitudinalsection of the steam-jet.

Referring to the drawings, Fig. 1, 1 is a casing cylindrical in form andhaving a rightangle flange 2. The cylinder 1 is inserted through acircular hole in the wall of an ashpit belowa furnace and is of a lengthdemanded by the location and force of the blowers. The flange 2 projectsat right angles to the cylinder 1 at its outer edge.

3 is a face-plate. (Shown in detail in Figs. 4 and 5.) lt is providedinthe rear side with a circular recess 4, into which fits the flange 2of the cylinder 1.

The flange is secured to the cylinder by suitable bolts, as shown. Theface-plate (shown in section in Fig. 4 and in plan in Fig. 5) isprovided with eight inwardly-projecting fingers 7 7, &c., on the end ofeach of which is a vertical support 8, having recesses in their outerends. These recesses are all in the same vertical plane. On one side ofthe face-plate is a lug 9, projecting at right angles from the plate andhaving a notch 10 in its outer end.

11 is the bell of the blower, cylindrical in shape, having the sameinterior diameter as the aperture in the face-plate and the cylinder 1and flared at its outer end. The narrow end of the bell is provided witha circular recess 12, having exterior and interior walls. The exteriorwall is provided with a notch 13 and the interior wall with a series ofnotches 14 14, &c. The notch 13 is of the same width as the width of thelug 9 and the notches 14 14 are of the same width as the lugs S S. Onthe exterior of the bell 11 are a series of lugs 15 15, projecting atright angles to the wall of the bell and perforated and by which thebell may be bolted to the face-plate, as shown in Fig. 1, by means ofthe bolts 16 16, &c.

17 is a steam-pipe supplying steam to the blower.

1S is a closed circular pipe tapped into the steam pipe 17 and havingeight branches 19 19, &c., which project radially inward from thecircular pipe 1S toward the center of the circle of the pipe 1S. Thecircular pipe 18 is of a size to iit into the recess 12 of the bell 11,and each of the branches 19 19 will be held in position by the lugs 8 Sof the faccplate, by which they will be supported. When the bell 11 isplaced on the face-plate, the circular pipe 18 will lie in the recess 12and the notch 13 of the bell will [it over the steampipe 17, while thenotches 14 14 will each lit over one of the branches 19 19 and hold thecircular pipe 18 and the series of branches iirmly in position withinthe center of the blower, leaving the center of the aperture open andunobstructed.

The detail of the steam-nozzles is shown in Fig. 6. y

20 is the steam-nozzle integral with the pipe 19.

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I 5 nut made integral with the cylinder, by which 21 is an air-nozzletapped into the rear end of the steam-nozzle 20 and beveled at itsforward end, so as to be screwed forward or backward into or out of' thesteam-nozzle, so as to increase or decrease the steam-aperture betweenthe exterior of' the air-nozzle 21 and the interior of the steam-nozzle20.

22 is a gasket surrounding the air-nozzle 21 and resting upon a shoulderin the wall of the steam-nozzle 20.

23 is a cylinder surrounding the air-nozzle and sliding freely thereon,provided with a thread upon its exterior and tapped into the rear end olthe steam-nozzle. The cylinder 23 is provided upon its exterior end witha it may be screwed down upon the gasket 22, so as to pack theair-nozzle 21 and not only prevent the escape of steam to the rear ofthe blower, but also to lock the air-nozzle when set within thesteam-nozzle.

Having now described my invention, what l desire to claim, and secure byLetters Patcnt, is-

1. ln a steam-blower, the combination with a bell having a centralaperture, of a circular steam-pipe outside of the bell and surroundingthe same and `having radial inwardly-projecting branches extending intothe bell, each branch being provided with a 3o steam-nozzle.

2. In a steam-blower, the combination with a face-plate havin@ a centralaperture, of a bell having a centra aperture secured to the face-plate,a circular steam-pipe surrounding the bell and having radialinwardly-projecting branches extending into the bell,each branch beingprovided with a steam-nozzle.

3. ln a steam-blower, the combination of a face-plate having a centralaperture, and provided with a series of lugs surrounding the apertureand projecting at right angles therefrom, with a removable bell, havinga central aperture and a series of notches of a size equal to andadapted to iit over the projecting lugs upon the face-plate, and acircular steamipe surrounding the bell and having radialDinwardly-projecting branches so located as to rest upon the lugs of thefaceplate and within the notches of the bell, substantially asdescribed.

Signed by Ine at Sault Ste. Marie, Michigan, this 12th day of August,1903.

HENRY EDWIN PARSON.

Witnesses:

CHAs. T. CLARK, WM. A. MILLAGER.

